Technological parameters optimization for intermediate heat treatment of bead steel wire
JIA Chun-yang1, CHU Shao-jun2, ZENG Guo-zhen3
1. School of Transportation, Zhejiang Industry Polytechnic College, Shaoxing 312000, Zhejiang, China; 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; 3. Harbor Science and Technology Co., Ltd., Zhejiang Harbor Holding Group, Hangzhou 310000, Zhejiang, China
Abstract:In order to reduce the breakage of bead wire in the production process of drawing and improve the processing performance and final product quality, the effects of heating temperature, lead bath temperature and quenching speed on the properties of bead wire were studied. The results showed that when the heat treatment linear velocity of φ3.5 mm steel wire was 18 m/min and the wire outlet temperature was about 940 ℃, a uniform austenite structure could be obtained, and it could be further decomposed in the lead tank treatment to obtain the required sorbite structure. At this time, the middle pass wire reached the maximum tensile strength, which was beneficial to reduce the phenomenon of wire breaking during drawing in the subsequent passes. After the steel wire under this process was drawn, the grains did not continue to grow after the austenite was homogenized, which not only ensured the uniformity of the steel wire structure, but also prevented the reduction of the tensile strength of the steel wire.
Oenášek J, Rodriguez Ripoll M, Weygand S M, et al.Multi-grain finite element model for studying the wire drawing process[J].Computational Materials Science,2007,39(1):23.